剑指offer 算法题（替换空格）

剑指offer 第二题
牛客网 测试算法

#include <string>
class Solution {
  public:
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     *
     * @param s string字符串
     * @return string字符串
     */
    string replaceSpace(string s) {
        // write code here
        int len = s.size();

        string n1 = "%20";

        string str;

        for (int i = 0; i < len; i++) {
            if (s[i] != ' ') {
                cout << s[i] << endl;
                str += s[i];
            } else {
                str += n1;
            }

        }
        return str;
    }
};

本地运行：

#include <iostream>
#include <unordered_map>
#include <string>
using namespace std;


int main()
{

    //vector<vector<int>> matrix( 3, vector <int>(4, 1) );


    string s = "We Are Happy";

    int len = s.size();

    string n1 = "%20";

    string str;

    for (int i = 0; i < len; i++) {
        /*cout << s[i] <<endl;
        cout << typeid(s).name() << endl;*/

        //s1 = s[i];

        if (s[i] != ' ') {
            cout << s[i] << endl;
            str += s[i];
        }
        else {
            str += n1;
        }
         
    }
    cout << str << endl;

    return 0;

}